Issue with Reserved IP Address

I tried to reserve an IP address using the cmdlet

New-AzureReservedIP -ReservedIPName "DSTPlusIP" -Label "DSTPlusIP" -Location "West Europe" but I got (after about 10-15 minutes) an internal server error.

Now (after about 12 hours) if I use Get-AzureReserverdIP I can see the reserved IP I tried to create with the correct name, label and location, but the status is "creating", InUse is of course false and the IP Address is empty.

I tried to delete it using Remove-AzureReservedIP -ReservedIPName "DSTPlusIP" -Force but again I get an internal server error (after about 10-15 minutes)

I would really like to be able to delete this item before I try to create a new reserved IP (same name or different one)

Any idea about the causes or possible solutions?

Thanks

Carlo